Artificial fiber



' Fatentecl Get. 3, i939 rmrreo TA'rss PATENT OFFl-CE.

Henry 0. Forrest, Merchantvllle, NJ.

No Drawing.

This invention relates to pile material for rug and carpet manufacture, containing artificial fiber as a substitute for wool. I To produce durable rugs and carpets it is essential to use as the pile of the carpet or rug a fiber which is both flexible and durable. The

' only satisfactory material which has heretofore been found for this purpose is coarse wool, such as goats wool and the like. By my invention I have produced an artificial fiber which may be substituted for all or a part of the coarse wool used as the pile material, 1. e., pile yarn, in making a carpet or'rug and which when so used gives the rug or carpet an attractive appearance and a durability as great as that of carpets and rugs in which the pile consists entirely of wool. The

artificial fiber which I have invented can be manufactured' at-a cost much less thanthe cost of wool. The artificial fiber for carpet manufacture 20 which I have invented is a cupro-ammonium fiber similar to cupro-ammonium artificial silk fiber in chemical composition. Its physical characteristics are similar to those of coarse wool. Each 5 individual fiber has a size of 25 to 30 deniers or more. It is strong and so pliable that it may be bent sharply without cracking. It has a crinkly form similar to that of a natural wool fiber.

In the manufacture of eupi'o-ammonium fiber it has heretofore been considered necessary to produce the fibers of small size, such asli or 2' deniers, in order that the liquid treatments re- Application .Jannary 23, 1937, Serial No. 121,983

quired to precipitate the fiber and remove the copper from it may be effective throughout the cross-section of the fiber. I'have found that by the continuous process described in my application, Serial No. 7,326, filed February 20, 1935, on which Patent No. 2,108,285 was issued to me on February 15, 1938, cupro-ammonium fibers, each of 25 deniers or more, may be efl'ectively treated with precipitating and washing liquids throughout the cross-section of em fiber. Large cuproammonium fibers made in this way are 'made crinkly by drying them without tension. After the final washing, the fibers are not dried on a heated drum under tension, but are dried while suspended without substantial tension, either before or after they are cut into lengths (from 3 to-5 inches), which are suitable for use in carpet manufacture.

I The present application is directed to pile yarn HENRY c; FORREST.

CERTIFICATE OF CORRECTIONo Patent No. 2,17%575. October-'5, 1959,

- HENRY C. FORREST. It is hereby certified that error appears-1n the printed specification of the above numbered patent requiring correction'as follows; second column, line 27 inthe claim, for "supro-ammonium" read oupro-onium; and

that the said Letters Patent should be read with this correct-ion tflueriuru that the same may conform to the record of the case in the Patent Office Signed and sealed this 51st day of October, A, D6 1959.

Henry Van Arsda1e (Seal) Acting Commissioner of Patents. 

